/*
 * Copyright 2008 Android4ME
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *	 http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.apposcopy.app;

import java.io.*;
import java.util.Formatter;

import org.xmlpull.v1.XmlPullParser;
import android.content.res.AXmlResourceParser;
import android.util.TypedValue;

/**
 * @author Dmitry Skiba
 * 
 *         This is example usage of AXMLParser class.
 * 
 *         Prints xml document from Android's binary xml file.
 */
public class AXMLPrinter 
{
	private StringBuffer sb = new StringBuffer();

	public void convert(InputStream binaryXML, OutputStream asciiXML) 
	{
		try {
			AXmlResourceParser parser = new AXmlResourceParser();
			parser.open(binaryXML);
			StringBuilder indent = new StringBuilder(10);
			final String indentStep = "	";
			while (true) {
				int type = parser.next();
				if (type == XmlPullParser.END_DOCUMENT) {
					break;
				}
				switch (type) {
				case XmlPullParser.START_DOCUMENT: {
					log("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
					break;
				}
				case XmlPullParser.START_TAG: {
					log("%s<%s%s", indent, getNamespacePrefix(parser.getPrefix()), parser.getName());
					indent.append(indentStep);

					int namespaceCountBefore = parser.getNamespaceCount(parser.getDepth() - 1);
					int namespaceCount = parser.getNamespaceCount(parser.getDepth());
					for (int i = namespaceCountBefore; i != namespaceCount; ++i) {
						log("%sxmlns:%s=\"%s\"", indent, parser.getNamespacePrefix(i), parser.getNamespaceUri(i));
					}

					for (int i = 0; i != parser.getAttributeCount(); ++i) {
						log("%s%s%s=\"%s\"", indent, getNamespacePrefix(parser.getAttributePrefix(i)), parser.getAttributeName(i),
								getAttributeValue(parser, i));
					}
					log("%s>", indent);
					break;
				}
				case XmlPullParser.END_TAG: {
					indent.setLength(indent.length() - indentStep.length());
					log("%s</%s%s>", indent, getNamespacePrefix(parser.getPrefix()), parser.getName());
					break;
				}
				case XmlPullParser.TEXT: {
					log("%s%s", indent, parser.getText());
					break;
				}
				}
			}
		} catch (Exception e) {
			throw new Error(e);
		} finally {
			try{
				binaryXML.close();
			} catch (IOException e) {
				throw new Error(e);
			}	
		}
		
		writeFile(asciiXML, sb.toString());		
	}

	private void writeFile(OutputStream fos, String content) 
	{
		OutputStreamWriter osw = null;
		
		try {
			osw = new OutputStreamWriter(fos, "utf-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		
		try {
			osw.write(content);
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				osw.close();
				fos.close();
			} catch (IOException e) {
				throw new Error(e);
			}
		}
		
	}

	private void log(String format, Object... arguments) 
	{
		Formatter f = new Formatter();
		f.format(format, arguments);
		//System.out.printf(f.toString());
		//System.out.println();
		sb.append(f.toString() + "\n");
	}

	private String getNamespacePrefix(String prefix) 
	{
		if (prefix == null || prefix.length() == 0) {
			return "";
		}
		return prefix + ":";
	}

	private String getAttributeValue(AXmlResourceParser parser, int index) 
	{
		int type = parser.getAttributeValueType(index);
		int data = parser.getAttributeValueData(index);
		if (type == TypedValue.TYPE_STRING) {
			return parser.getAttributeValue(index);
		}
		if (type == TypedValue.TYPE_ATTRIBUTE) {
			return String.format("?%s%08X", getPackage(data), data);
		}
		if (type == TypedValue.TYPE_REFERENCE) {
			return String.format("@%s%08X", getPackage(data), data);
		}
		if (type == TypedValue.TYPE_FLOAT) {
			return String.valueOf(Float.intBitsToFloat(data));
		}
		if (type == TypedValue.TYPE_INT_HEX) {
			return String.format("0x%08X", data);
		}
		if (type == TypedValue.TYPE_INT_BOOLEAN) {
			return data != 0 ? "true" : "false";
		}
		if (type == TypedValue.TYPE_DIMENSION) {
			return Float.toString(complexToFloat(data)) + DIMENSION_UNITS[data & TypedValue.COMPLEX_UNIT_MASK];
		}
		if (type == TypedValue.TYPE_FRACTION) {
			return Float.toString(complexToFloat(data)) + FRACTION_UNITS[data & TypedValue.COMPLEX_UNIT_MASK];
		}
		if (type >= TypedValue.TYPE_FIRST_COLOR_INT && type <= TypedValue.TYPE_LAST_COLOR_INT) {
			return String.format("#%08X", data);
		}
		if (type >= TypedValue.TYPE_FIRST_INT && type <= TypedValue.TYPE_LAST_INT) {
			return String.valueOf(data);
		}
		return String.format("<0x%X, type 0x%02X>", data, type);
	}

	private String getPackage(int id) 
	{
		if (id >>> 24 == 1) {
			return "android:";
		}
		return "";
	}

	// ///////////////////////////////// ILLEGAL STUFF, DONT LOOK :)

	public static float complexToFloat(int complex) {
		return (float) (complex & 0xFFFFFF00) * RADIX_MULTS[(complex >> 4) & 3];
	}

	private static final float RADIX_MULTS[] = { 0.00390625F, 3.051758E-005F, 1.192093E-007F, 4.656613E-010F };
	private static final String DIMENSION_UNITS[] = { "px", "dip", "sp", "pt", "in", "mm", "", "" };
	private static final String FRACTION_UNITS[] = { "%", "%p", "", "", "", "", "", "" };
	
	
	public static void main(String[] args) throws Exception
	{
		File binaryFile = new File(args[0]);
		new AXMLPrinter().convert(new FileInputStream(binaryFile), System.out);
	}
}